These knobs lock and unlock with a button on the inside or their own unique keys.

For frequently used doors, these knobs last twice as long as standard key- and button-locking door knobs.

For frequently used doors, these knobs last twice as long as standard keyed alike key- and button-locking door knobs.

Open these knobs with both a shared master key and key unique to that door, or use the button on the inside.

Each of these knobs opens with its own key. The outside handle is always locked, but you can open the door from inside.

For frequently used doors, these knobs last twice as long as standard self-locking door knobs.

Unlock these knobs with a master key and a key unique to that door. They are always locked from the outside, but doors can be opened from the inside knob.

These knobs can always be opened from the inside, while the locks on the outside each open with a different key.

For frequently used doors, these knobs last twice as long as standard key-locking door knobs.

These knobs open with a master key and their own keys. The inside knob opens the door whether it is locked or unlocked.

Also known as passage knobs, these knobs do not lock.

In addition to lasting twice as long as standard door knobs, these are made entirely of corrosion-resistant materials to stand up to washdown and marine environments.

In addition to lasting twice as long as button-locking door knobs, these are made entirely of corrosion-resistant materials to stand up to washdown and marine environments.